Practice Correlation Between Soil Properties And Strength Parameters (4.5) - Evaluation of Soil Strength for Pavements

Practice: Correlation between Soil Properties and Strength Parameters

Lesson 4.5Evaluation of Soil Strength for Pavements

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9 questions

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6 sample questions

Question 1.
What is Plasticity Index (PI)?
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PI is calculated from the Liquid Limit.
Question 2.
How does liquid limit (LL) affect soil strength?
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Think about saturation effects on clay.
3Question 3.
What happens to CBR as the Plasticity Index increases?
- CBR increases
- CBR decreases
- CBR stays the same
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Remember the relationship with strength.
4Question 4.
True or False: Higher dry density always results in lower soil strength.
- True
- False
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Think about compaction effects.
Question 5.
You have two soil samples. Sample A has a PI of 20, and Sample B has a PI of 10. Predict which sample would likely demonstrate higher CBR values.
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Consider plasticity's effect on CBR.
Question 6.
During a pavement assessment, you find a correlation chart indicating that DCPT penetration resistance can predict CBR values. If the resistance for a site is recorded at 20 mm, estimate the CBR using the available correlation.
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Use specifics of the provided correlation.

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